Table 2 Statistical results of ancient sites distributed in environments with different suitability
Suitability for living | Most suitable | Suitable | Relatively suitable | Unsuitable |
|---|---|---|---|---|
Han to North and South Dynasties | 16.7%s | 29.5% | 18.5% | 35.3% |
Sui and Tang Dynasties | 17.5% | 28.8% | 22.7% | 31.0% |